It is a happy number.
12636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (36).
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
12636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
212636 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17836).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12636 is a wasteful number, since it uses less digits than its factorization.
12636 is an odious number, because the sum of its binary digits is odd.
The square root of 12636 is about 112.4099639712. The cubic root of 12636 is about 23.2918082300.
The spelling of 12636 in words is "twelve thousand, six hundred thirty-six".